Can-Am Defender HD11 2nd Battery Kit
Keep your Can-Am Defender HD11 audio and accessories powered on every ride with the UTV Stereo Defender HD11 2nd Battery Kit. This plug-and-play auxiliary battery system gives your amplifiers the current headroom they need to perform at full output — even at low RPMs — without ever draining the starting battery.
The isolation system automatically routes accessory draw to the secondary battery when the key is off, protecting your starting battery from deep discharge. Built with heavy-duty components to the same standard as UTV Stereo’s proven Defender battery lineup.
Kit Includes
- Heavy-duty battery mounting bracket — HD11-specific fit
- High-current 4 AWG pure copper power wire
- 80A automatic isolator — protects starting battery when key is off
- UTV Stereo UTVS-925 AGM auxiliary battery
- All wiring, hardware, and connectors for a complete installation
Features
- Plug-and-play installation — designed specifically for the Defender HD11
- Isolation system allows accessories to draw from the 2nd battery with the key off
- Protects starting battery from deep discharge during extended audio use
- Maximizes amplifier headroom for clean, undistorted output at idle
- Optional add-ons at checkout: replacement starting battery, dual battery charger/maintainer, 55A power pack, and jump pack
Fitment
Designed specifically for the Can-Am Defender HD11. Ships in approximately 2 weeks.
Frequently Asked Questions
Do I need a 2nd battery with my Defender HD11 stereo system?
Highly recommended for any build with a subwoofer amplifier. The HD11’s factory charging system can struggle to sustain amplifier current demands at low idle — a 2nd battery provides the reserve power your system needs for consistent, clean output without stressing the OEM electrical system.
What’s included vs. the optional add-ons?
The base kit includes the auxiliary battery, mounting hardware, isolator, and all wiring. Optional add-ons at checkout allow you to add a replacement starting battery, a dual battery charger/maintainer for long-term health, a 55A power pack for high-demand systems, and a jump pack for peace of mind on the trail.
